扫描Powershell中每个文件夹的特定子文件夹

Question

I have this script which is working fine

$watcher = New-Object System.IO.FileSystemWatcher
$watcher.Path = "C:\folder_to_scan\"
$watcher.Filter = "*.nrrd"
$watcher.IncludeSubdirectories = $true
$watcher.EnableRaisingEvents = $true  

$action = 
{ 
    $path = $Event.SourceEventArgs.FullPath
    Write-Host "The file '$path' was $changeType at '$(Get-Date)'" -fore green             
}   
Register-ObjectEvent $watcher "Created" -Action $action
while ($true) {sleep 3600}

But in my C:\\folder_to_scan\\ I have a lot of sub-directories like 00123 , 00245 , 56002 ... And inside each of them I have \\THE_DIRECTORY_TO_SCAN

So I tried this $watcher.Path = "C:\\folder_to_scan\\*\\THE_DIRECTORY_TO_SCAN\\" and $watcher.Path = "C:\\folder_to_scan\\[0-9]*\\THE_DIRECTORY_TO_SCAN\\"

But this is not working. Is it possible to use wildcard in this situation?

---

If not, how to use multi path with FileSystemWatcher ? Because I figured out that we can use this

Resolve-Path "C:\folder_to_scan\*\THE_DIRECTORY_TO_SCAN\" | Select -ExpandProperty Path

Answer 1

I'm not familiar with FileSystemWatcher so I am assuming you just need to feed in the folder paths to $watcher.Path

I'm also assuming your code works already.

try using Get-ChildItem and use a for loop:

$watcher = New-Object System.IO.FileSystemWatcher
Get-ChildItem "C:\folder_to_scan\" -Recurse | ? { $_.PSIsContainer -and $_.Name.EndsWith("THE_DIRECTORY_TO_SCAN")}| %{ 
    $watcher.Path = $_.FullName #change this
    $watcher.Filter = "*.nrrd"
    $watcher.IncludeSubdirectories = $true
    $watcher.EnableRaisingEvents = $true  
}
    $action = 
    { 
        $path = $Event.SourceEventArgs.FullPath
        Write-Host "The file '$path' was $changeType at '$(Get-Date)'" -fore green             
    }   
    Register-ObjectEvent $watcher "Created" -Action $action
    while ($true) {sleep 3600} 

Answer 2

Ok so to clarify what i was talking about earlier. You are only repeating your wait-function. To show you what i mean :

    echo "This would be your code running."
    while ($true) {sleep -second 3}

This would print the sentence once and then keep waiting for eternity for 3 seconds each time $true is true.

What you need to do is :

do{
   echo "This would be your code running."
   sleep -seconds 3
} while($true)

This will print the sentence every 3 seconds. Or in your case, run your watcher every 3 seconds.

Answer 3

I didn't find a perfect solution so I did this

if ( $path -like '*\THE_DIRECTORY_TO_SCAN\*' ) 
{ Write-Host "File created in \THE_DIRECTORY_TO_SCAN" -fore green }
else
{ Write-Host "File created NOT in \THE_DIRECTORY_TO_SCAN" -fore red }